摘要
对云南潦浒、寻甸、吉林舒兰蒙旦树脂中结合酸的化学组成及结构特征进行了对比研究 .结果显示 ,树脂结合酸均以正构烷酸为主要成份 ,其分布为C1 2 ～C2 8,高含量的正构烷酸集中在低碳数一端 ,C2 0 含量最高 ,其次为C1 6 ,而舒兰结合酸中 ,正构烷酸占绝对优势 ,且C1 6 为最高含量的化合物 ;去氢松香酸在每一个样品中含量较低 ,其它三环二萜酸 ,如松脂酸、三达松脂酸等异构体或立体异构体含量也非常低 ;具有五环三萜骨架的酸性物质 ,在潦浒、舒兰结合酸中比较丰富 ,其含量超过寻甸结合酸 ;在低碳数一端 ,存在着各种支链烷酸及苯甲酸、苯酚及取代物 .潦浒树脂结合酸与寻甸树脂结合酸无论从组成上和分布都是极其相似的 ,对比树脂烃 ,树脂游离酸的结果 ,可以肯定地得出蒙旦蜡原料煤生煤植物和生煤环境是极为相似的 ,而与舒兰蒙旦蜡原料煤之生源和环境存在着本质的差异 .
The combined acids, LHZZS,XDZZS and SLZZS, one of four fractions in montan resins from montan waxes from Liaohu, Xundian (Yunnan province) and Shulan(Jilin province) brown coal respectively, were derived by CH 2N 2 to methyl esters and their chemical constituents and structural characteristic were studied on GC-MS. The experimental results demonstrate that normal fatty acids from C 12 to C 28 are dominant in combined acid fraction, but concentrated mainly in low carbon number (C 16 ,C 18 ,C 20 ,C 22 ), fatty acid with highest content both in LHZZS and XDZZS is eicosanoic acid, the next, hexadecanoic acid. In SLZZS, the normal fatty acids are absolutely dominant compositions, hexadecanoic acid with the highest content, the next, benzoic acid; Tricyclic diterpanoic acids and pentacyclic triterpanoic acids, such as dehydroabietic acid, pimaric acid, isopimaric acid, sandaracopimaric acid, tetrahydroabietic acid, abietic acid,C 32 and C 33 -hopanoic acid,etc.,exist in the combined acid for each sample, but compared with free acid fraction of montan resin, especially in LHZZS and XDZZS, the amount is quite lower, which made the huge deference between free acid fretion and combined acid fraction; there are more branched fatty acids and benzoic acid, phenolic compounds in SLZZS. From the chemical constituents and their distribution characteristic of combined acid, free acid and hydrocarbon fraction, it can be concluded that the original resource of Liaohu montan wax is much similar to that of Xundian montan wax, but basically different from the resource of Shulan montan wax.
出处
《昆明理工大学学报（理工版）》
2000年第3期79-84,共6页
Journal of Kunming University of Science and Technology(Natural Science Edition)
基金
原煤炭部煤炭科学基金
关键词
蒙旦树脂
树脂结合酸
正构烷酸
化学组成
montan resin
combined acids
chemical constituent and structural characteristic
normal fatty acid
GC-MS analysis
